 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.ui.views.bookmarkexplorer;

 import java.util.List ;

 import org.eclipse.core.resources.IMarker;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.StructuredViewer;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.SWTError;
 import org.eclipse.swt.dnd.DND;
 import org.eclipse.swt.dnd.TextTransfer;
 import org.eclipse.swt.dnd.Transfer;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.internal.views.bookmarkexplorer.BookmarkMessages;
 import org.eclipse.ui.part.MarkerTransfer;

 /**
  * Copies one or more bookmark(s) to the clipboard.
  */
 class CopyBookmarkAction extends BookmarkAction {

     /**
      * Creates the action.
      *
      * @param bookmarkNavigator the view
      */
     public CopyBookmarkAction(BookmarkNavigator bookmarkNavigator) {
         super(bookmarkNavigator, BookmarkMessages.CopyBookmark_text);
         PlatformUI.getWorkbench().getHelpSystem().setHelp(this,
                 IBookmarkHelpContextIds.COPY_BOOKMARK_ACTION);
         setEnabled(false);
     }

     /**
      * Performs this action.
      */
     public void run() {
         // Get the selected markers
 BookmarkNavigator bookmarkNavigator = getView();
         StructuredViewer viewer = bookmarkNavigator.getViewer();
         IStructuredSelection selection = (IStructuredSelection) viewer
                 .getSelection();
         if (selection.isEmpty()) {
             return;
         }
         List list = selection.toList();
         IMarker[] markers = new IMarker[list.size()];
         list.toArray(markers);

         setClipboard(markers, createBookmarkReport(markers));
     }

     /**
      * Updates enablement based on the current selection
      */
     public void selectionChanged(IStructuredSelection sel) {
         setEnabled(!sel.isEmpty());
     }

     private void setClipboard(IMarker[] markers, String markerReport) {
         try {
             // Place the markers on the clipboard
 Object [] data = new Object [] { markers, markerReport };
             Transfer[] transferTypes = new Transfer[] {
                     MarkerTransfer.getInstance(), TextTransfer.getInstance() };

             // set the clipboard contents
 getView().getClipboard().setContents(data, transferTypes);
         } catch (SWTError e) {
             if (e.code != DND.ERROR_CANNOT_SET_CLIPBOARD) {
                 throw e;
             }
             if (MessageDialog
                     .openQuestion(
                             getView().getShell(),
                             BookmarkMessages.CopyToClipboardProblemDialog_title, BookmarkMessages.CopyToClipboardProblemDialog_message)) {
                 setClipboard(markers, markerReport);
             }
         }
     }

     private String createBookmarkReport(IMarker[] markers) {
         String report = ""; //$NON-NLS-1$

         //write header
 report += BookmarkMessages.ColumnDescription_header + '\t';
         report += BookmarkMessages.ColumnResource_header + '\t';
         report += BookmarkMessages.ColumnFolder_header + '\t';
         report += BookmarkMessages.ColumnLocation_header;
         report += System.getProperty("line.separator"); //$NON-NLS-1$

         //write markers
 for (int i = 0; i < markers.length; i++) {
             report += MarkerUtil.getMessage(markers[i]) + '\t';
             report += MarkerUtil.getResourceName(markers[i]) + '\t';
             report += MarkerUtil.getContainerName(markers[i]) + '\t';
             int line = MarkerUtil.getLineNumber(markers[i]);
             report += NLS.bind(BookmarkMessages.LineIndicator_text, String.valueOf(line));
             report += System.getProperty("line.separator"); //$NON-NLS-1$
 }

         return report;
     }
 }


